The Samsung 30Q sets the standard for what is considered a reliable, cost effective cell in the esk8 community. This is the cell of choice by any reputable battery builder’s standards when it comes to 18650 options.
If you’re keen to build your own electric skateboard battery pack, the Samsung 30Q’s are a fantastic choice. They offer a great balance between capacity, discharge and charge cycles.
Positive terminal style: Flat-top
Protected (PCB): No
Country of Origin: South Korea
Max. continuous discharge current: 15A
Rated capacity (minimum): 2950 mAh
Nominal capacity: 3000 mAh
Nominal voltage: 3.6 V
Discharge end voltage: 2.5 V
Charging voltage: 4.20 +/- 0.03 V
Standard charging current: 1.25 A
Dimensions: Diameter 18mm Length 65mm
Never completely discharge Li-ion battery (below 2.5V under load ).
Charge fully to 4.2V before first use.
Never use force to install (insert) Li-ion battery.
Do not use old and new battery cells together.
Use only a high quality battery charger.
Do not expose to heat.
Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). Keep battery that is not in use in plastic holder (or any insulating container).
Never charge battery over 4.25V (another reason to use high quality battery charger).
Do not charge unattended unless using an intelligent charger that shuts off at full charge.
Do not store your Li-ion batteries fully charged (for extended period of time).
Store in cold and dry place at approximately 3.7V (storage charge).
After battery is discharged don’t leave it discharged, charge it as soon as possible.